DLR completes ground roll tests of HAP alpha uncrewed high altitude solar aircraft

Berlin, Germany (SPX) Jan 01, 2026
The German Aerospace Center has successfully completed ground roll tests of HAP alpha, an uncrewed high altitude solar powered aircraft designed to operate in the lower stratosphere for extended periods, marking a key milestone toward future flight testing. Ground roll tests verified the aircraft's steering, braking, propulsion response, and ground handling behavior under realistic operati